Charlie, I missed your post previously and saw it when I was going to add another photo. ...not sure if you'll see my reply now... but I think the name you are referring to is "House, Hasson Hardware". I've looked an I just haven't seen any real proof that is the meaning. If you get a chance to talk to the guy, please ask about it. I'd definitely be interested.
I popped my head in this topic to share an updated photo of my little collection of 'bellies. Mostly sunk joints on this pattern. Two have fancy celluloid covers and one each of pearl, stag and bone. All but one have threaded bolsters and that one sports some fancy slanted bolsters.
Here are a few sowbelly advertisements:
It's a pattern that was rebirthed by Tony Bose and Case uses his pattern as part of their regular production.
Here's the sowbelly from Case's Tony Bose Commemorative Set:
Case makes 'em with 3-blades and 5-blades and although somewhat rare, there are also some with one blade. This 1-blade sowbelly has a Menefee regrind (shown with a Back Pocket).
And here are a few modern sowbellies made by Queen. Queen makes them with 2-blades (Moose) and 3- 4- and 5-blades:
A comparison shot of Queen, Case and Rough Rider sowbellies:
And here are my custom sowbellies: